Vario roof (VR) diagnosis, troubleshooting | |||
Troubleshooting | |||
Defect | Possible cause | Notes | Remedy |
1 Indicator lamp in vario roof switch (S84) is not illuminated when ignition switched on | Voltage supply at terminal 15 Vario roof switch (S84) Multi-function control module (N10-3) |
N10-3 | |
2 Indicator lamp in vario roof switch (S84) flashes at 6 times normal frequency (pulsing) when switch operated | Trunk partition "closed" limit switch (S69/10) Trunk lid "closed" limit switch (S69/12) | ||
3 Indicator lamp in vario roof switch flashes when vario roof open (no pulsing) (gong sounds when vehicle moving) | Left trunk lid "closed/locked" limit switch (S69/7) not actuated Right trunk lid "closed/locked" limit switch (S69/8) not actuated Vario roof "locked" limit switch (left rotary tumbler) (S69/3) not actuated Vario roof "locked" limit switch (right rotary tumbler) (S69/2) not actuated After 6.5 minutes in the stop mode, the gong in the instrument cluster is energized for 30 s | ||
4 Indicator lamp in vario roof switch flashes (pulsing) when switch not operated | Left trunk lid "closed/locked" limit switch (S69/7) not actuated Right trunk lid "closed/locked" limit switch (S69/8) not actuated Vario roof "locked" limit switch (left rotary tumbler) (S69/3) not actuated Vario roof "locked" limit switch (right rotary tumbler) (S69/2) not actuated After 6.5 minutes in the stop mode, the gong in the instrument cluster is energized for 30 s | ||
5 Indicator lamp in vario roof switch flashes (pulsing) when switch operated | Fault is identified (fault details stored) | Read out fault memory with Hand-Held Tester (HHT) | |
6 Indicator lamp in vario roof switch illuminated when roof locked (no pulsing) (gong sounds when vehicle moving) | Left trunk lid "closed/locked" limit switch (S69/7) not actuated Right trunk lid "closed/locked" limit switch (S69/8) not actuated Vario roof "locked" limit switch (left rotary tumbler) (S69/3) not actuated Vario roof "locked" limit switch (right rotary tumbler) (S69/2) not actuated | ||
7 During opening procedure of vario roof: front and rear side windows are not retracted | Hydraulic unit not running Trunk partition "closed" limit switch (S69/10) Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Left or right trunk lid "closed/locked" limit switch (S69/7 or S69/8) and trunk lid "open" limit switch (S69/9) are actuated simultaneously Vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are actuated simultaneously Left or right vario roof "locked" limit switch (S69/3 or S69/2) is actuated, whereas vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are not actuated Left or right trunk lid "closed/locked" limit switch (S69/7 or S69/8) is actuated, whereas vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are not actuated No limit switch signal present Voltage supply for power windows Speed signal Signal Temperatur Pumpe Schalter Vario-Dach (S84) Steuergerät Kombifunktionen (N10-3) Magnetventil Vario-Dach (A7/5y1) Magnetventil Heckdeckel (A7/5y2) | ||
8 Vario roof is not released at front | Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Vario roof "open/lowered" limit switch (S69/11) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) Trunk lid cylinder (A7/5y2) Check vario roof hydraulic cylinder | ||
9 Trunk lid is not released or does not open | Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Vario roof "open/lowered" limit switch (S69/11) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) Trunk lid cylinder solenoid valve (A7/5y2) Check vario roof hydraulic cylinder | ||
10 Vario roof does not open | Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Vario roof "open/lowered" limit switch (S69/11) Hydraulic pump (A7/5) Trunk lid cylinder (A7/5y2) Check vario roof hydraulic cylinder | ||
11 Trunk lid does not close or lock | Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Hydraulic pump (A7/5) Check trunk lid hydraulic cylinder | ||
12 Side windows not raised after vario roof opening procedure | Voltage supply for power windows Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Multi-function control module (N10-3) | ||
13 During vario roof closing procedure: vario roof does not close | Hydraulic unit does not run Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Trunk partition "closed" limit switch (S69/10) Left or right trunk lid "closed/locked" limit switch (S69/7 or S69/8) and trunk lid "open" limit switch (S69/9) are actuated simultaneously Vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are actuated simultaneously Left or right vario roof "locked" limit switch (S69/3 or S69/2) is actuated, whereas vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are not actuated Left or right trunk lid "closed/locked" limit switch (S69/7 or S69/8) is actuated, whereas vario roof "open/lowered" limit switch (S69/11) and vario roof "closed" limit switch (S69/1) are not actuated No limit switch signal present Voltage supply for power windows Speed signal Signal Temperatur Pumpe Schalter Vario-Dach (S84) Steuergerät Kombifunktionen (N10-3) Magnetventil Vario-Dach (A7/5y1) Magnetventil Heckdeckel (A7/5y2) | ||
14 Trunk lid is not released or does not open | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Trunk partition "closed" limit switch (S69/10) Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Hydraulic pump (A7/5) Trunk lid cylinder (A7/5y2) Check vario roof hydraulic cylinder | ||
15 Vario roof is not released | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Trunk partition "closed" limit switch (S69/10) Trunk lid rotary tumbler/trunk lamp toggle switch (S69/12) Hydraulic pump (A7/5) Trunk lid cylinder (A7/5y2) | ||
16 Vario roof does not close | Vario roof "closed" limit switch (S69/1) Vario roof "open/lowered" limit switch (S69/11) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) Trunk lid cylinder (A7/5y2) Check hydraulic cylinder | ||
17 Trunk lid does not close or lock | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) Check vario roof hydraulic cylinder | ||
18 Vario roof does not lock | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) Check trunk lid hydraulic cylinder | ||
19 Rear side windows are not raised | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Voltage supply for power windows Multi-function control module (N10-3) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) | ||
20 Front side windows are not raised | Vario roof "locked" limit switch (left rotary tumbler) (S69/3) Vario roof "locked" limit switch (right rotary tumbler) (S69/2) Trunk lid "open" limit switch (S69/9) Left trunk lid "closed/locked" limit switch (S69/7) Right trunk lid "closed/locked" limit switch (S69/8) Voltage supply for power windows Multi-function control module (N10-3) Hydraulic pump (A7/5) Vario roof solenoid valve (A7/5y1) | ||
21 Side windows are not opened or closed by vario roof switch (S84) but can be operated by power window switch | Vario roof not locked Vario roof switch (S84) Multi-function control module (N10-3) | ||
22 Side windows are not opened or closed by power window switch (position 1) | Left front power window switch (S21/1) Right front power window switch (S21/2) Left front power window motor (M10/3) Right front power window motor (M10/4) Multi-function control module (N10-3) | ||
23 Side windows are not opened automatically by power window switch (position 2) | Left front power window switch (S21/1) Right front power window switch (S21/2) Multi-function control module (N10-3) | ||
24 Vario roof opening or closing procedure too slow | Check hydraulic unit |
Referenced documents
- ad7750p200007a Summary chart, electric limit-switch constellation for opening procedure of vario roof
- ad7750p200008a Summary chart, electric limit-switch constellation for closing procedure of vario roof
- ad7750p200009a Summary chart, energizing side windows for opening procedure of vario roof
- ad7750p200010a Summary chart, energizing side windows for closing procedure of vario roof
- ad7750p2000a Vario roof (VR) diagnosis, previous knowledge
- ad7750p600001a Voltage supply for terminal 30E, 31E, checking electrical system, vario roof (VR)
- ad7750p600002a Voltage supply for terminal 30A, 31A, checking electrical system, vario roof (VR)
- ad7750p600003a Voltage supply for terminal 15R, checking electrical system, vario roof (VR)
- ad7750p600004a Voltage supply for terminal 15, checking electrical system, vario roof (VR)
- ad7750p600005a Voltage supply for terminal 30B, 31B, checking electrical system, vario roof (VR)
- ad7750p600006a Hydraulic unit motor (A7/5m1), checking electrical system, vario roof (VR)
- ad7750p600007a Energizing of pump relay (A7/5k1) by multi-function control module (N10-3), checking electrical system, vario roof (VR)
- ad7750p600008a Overload protection thermocouple (A7/5b1), checking electrical system, vario roof (VR)
- ad7750p600009a Vario roof "locked" limit switch, checking electrical system, vario roof (VR)
- ad7750p600010a Vario roof "closed" limit switch, checking electrical system, vario roof (VR)
- ad7750p600011a Vario roof "open/lowered" limit switch, checking electrical system, vario roof (VR)
- ad7750p600012a Trunk lid "open" limit switch, checking electrical system, vario roof (VR)
- ad7750p600013a Trunk lid "closed/locked" limit switch, checking electrical system, vario roof (VR)
- ad7750p600014a Trunk partition "closed" limit switch, checking electrical system, vario roof (VR)
- ad7750p600015a Trunk lid rotary tumbler/trunk lamp toggle switch, checking electrical system, vario roof (VR)
- ad7750p600016a Voltage supply for malfunction indicator lamp in vario roof switch, checking electrical system, vario roof (VR)
- ad7750p600017a Energizing multi-function control module from vario roof switch, checking electrical system, vario roof (VR)
- ad7750p600019a Ground connection for left front power window switch from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600020a Left front power window switch, checking electrical system, vario roof (VR)
- ad7750p600021a Energizing of left front power window motor from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600022a Left front power window motor, checking electrical system, vario roof (VR)
- ad7750p600023a Ground connection for right front power window switch from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600024a Right front power window switch, checking electrical system, vario roof (VR)
- ad7750p600025a Energizing of right front power window motor from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600026a Right front power window motor, checking electrical system, vario roof (VR)
- ad7750p600027a Energizing of left rear power window motor from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600028a Left rear power window motor, checking electrical system, vario roof (VR)
- ad7750p600029a Energizing of right rear power window motor from multi-function control module, checking electrical system, vario roof (VR)
- ad7750p600030a Right rear power window motor, checking electrical system, vario roof (VR)
- ad7750p600031a Energizing of vario roof solenoid valve, checking electrical system, vario roof (VR)
- ad7750p600032a Energizing of trunk lid cylinder, checking electrical system, vario roof (VR)
- ad7750p600034a Status signal from wheel speed sensor, checking electrical system, vario roof (VR)
- ad7750p600035a Speed signal, checking electrical system, vario roof (VR)
- ad7750p700001a Hydraulic unit, checking hydraulic system, vario roof (VR)
- ad7750p700004a Hydraulic cylinder (rod end) for vario roof, checking hydraulic system, vario roof (VR)
- ad7750p700005a Hydraulic cylinder (rod end) for trunk lid, checking hydraulic system, vario roof (VR)
- ad7750p700007a Hydraulic cylinder on the piston side, Vario roof, checking the hydraulic components for the Vario roof (VD)